Keston Combi 35kw User Manual download pdf (Page 34)

INSTALLATION

Keston Combi - Installation and Servicing

INITIAL LIGHTING . . . . CONT’D

INSTALLER MODE

Installer Mode is entered as follows:

1. Turn the DHW temperature control knob full anti-clockwise.

2. Turn the CH ow temperature control knob full anti-clockwise.

3. Turn and hold the mode knob in the reset position for more than 5 secs and then turn it to the Winter or Summer position.

The boiler will display “Installer mode”.

If no faults have occurred the boiler will display “No faults”.

If any faults have occurred a list of faults up to a maximum of 10 including the type of fault and how long ago it occurred will be

shown in the following format.

MESSAGE 1 MESSAGE 2 MESSAGE 3

LIST OF FAULTS

Fault 1 (latest fault) Low water pressure 2 days ago

Fault 2 No water flow lockout

Fault 3 Overheat lockout 384 days ago

78 days ago

3G9713a

The boiler will then display the current values of

ow temperature, return temperature, domestic hot

water temperature, DHW ow rate and diverter valve

position in the following format:

MESSAGE 1

CURRENT VALUES

Flow temp 80ºC

Return temp 60ºC

DHW temp 64ºC

DHW flow rate 8 l/min

Diverter valve DHW position

3G9714

Note.

If you would like to hold one of the values on the display to watch

its behaviour then turn the reset knob to the reset position while it is

displayed and hold it there.

Finally the display will operate in one of two modes. If there is a

fault then more extensive corrective actions will be shown than are

usually displayed for the end user. If there is not a fault then the

information displayed for current operating states will also be more

extensive than is usually displayed for the end-user (pre-purge,

ignition and post purge for example).

Installer mode automatically ends after 10 mins or by moving the

mode knob to the standby position.

RESET PROCEDURE

To reset boiler, turn the mode control knob (D) to reset position and immediately turn knob back to required setting. The boiler will

repeat the ignition sequence if a heat demand is present.

Legend

A. Pre-heat On/off

B. DHW temperature control

C. CH temperature control

D. Off/Summer/Winter/Reset Control

E. Boiler Status

F. Burner ‘on’ indicator

A B E F C D

INSTALLATION

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Keston Combi 35kw User Manual Page 34

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